<?php include 'inc/header.php'; ?>
<?php
  $name = $email = $courseName = $content = '';
  $nameErr = $emailErr = $courseNameErr = $contentErr = '';
  // 表单提交
  if (isset($_POST['submit'])){
    //验证姓名
    if(empty($_POST['name'])){
      $nameErr = "姓名为必填项";
    } else {
      $name = filter_input(INPUT_POST,'name',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
    }
    //验证邮箱
if (empty($_POST['email'])){
  $emailErr = "邮箱为必填项"
}else{
  $email = filter_input(INPUT_POST,'name',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
}

//验证课程名称
if (empty($_POST['course'])){
  $courseNameErr = "课程名为必填项"
}else{
  $courseName = filter_input(INPUT_POST,'name',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
}

//验证评价内容
if (empty($_POST['body'])){
  $contentErr = "评价内容为必填项"
}else{
  $content = filter_input(INPUT_POST,'name',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
}
  }
  echo $nameErr;
  echo $name;


  if (empty($nameErr) && empty($emailErr) && empty($courseNameErr) && empty($contentErr)) {
    // 添加到数据库
    $sql = "INSERT INTO review (name, email, course_name, content) VALUES('$name', '$email', '$courseName', '$content')";
  
    if (mysqli_query($conn, $sql)) {
      // 成功
      header('Location: reviews.php');
    } else {
      // 错误
      echo "出错：" . mysqli_error($conn);
    }
  }
  





?>

<img src="img/logo.avif" class="w-25 mb-3" alt="">
    <h2>课程评价</h2>
    <p class="lead text-center">为你所上的课程留下评价</p>
    <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']) ?>" method="POST" class="mt-4 w-75">
      <div class="mb-3">
        <label for="name" class="form-label">你的姓名</label>
        <input type="text" class="form-control  <?php echo $nameErr? 'is-invalid':null ;?> "  id="name" name="name" placeholder="请输入你的姓名">
        <div class ="invalid-feedback">
          <?php echo $nameErr;?>
        </div>
      </div>
      <div class="mb-3">
        <label for="email" class="form-label">你的邮箱</label>
        <input type="email" class="form-control <?php echo $emailErr? 'is-invalid':null ;?>" id="email" name="email" placeholder="请输入你的邮箱">
        <div class ="invalid-feedback">
          <?php echo $emailErr;?>
        </div>
      </div>
      <div class="mb-3">
        <label for="course" class="form-label">课程名称</label>
        <input type="text" class="form-control <?php echo $courseNameErr? 'is-invalid':null ;?>" id="course" name="course" placeholder="请输入课程名称">
        <div class ="invalid-feedback">
          <?php echo $courseNameErr;?>
        </div>
      </div>
      <div class="mb-3">
        <label for="body" class="form-label">评价内容</label>
        <textarea class="form-control <?php echo $contentErr? 'is-invalid':null ;?>" id="body" name="body" rows="4" placeholder="请输入你的评价"></textarea>
        <div class ="invalid-feedback">
          <?php echo $contentErr;?>
        </div>
      </div>
      <div class="mb-3">
        <input type="submit" name="submit" value="提交评价" class="btn btn-dark w-100">
      </div>
    </form>

<?php include 'inc/footer.php'; ?>

